Essays about: "cemented carbide"

Showing result 21 - 25 of 58 essays containing the words cemented carbide.

  1. 21. Design of cemented carbide with Ni-based superalloy binder strengthened with y’-Ni3Al precipitates

    University essay from KTH/Materialvetenskap

    Author : Oscar Edholm; [2018]
    Keywords : Cemented Carbide; Super alloy; Ni-alloy; Ni-Super alloy; Superalloy; Ni3Al; NiAl; Gamma Prime; Gamma; Precipitates; Ni3Al Precipitates; Master Alloy; Liquid Phase Sintering; Cementerad karbid; Hårdmetall; Superlegering; Ni-legering; Ni-Superlegering; Superalloy; Ni3Al; NiAl; Gamma Prim; Gamma; Precipitates; Ni3Al Precipitates; Mästerlegering; Utfällning;

    Abstract : Replacement of cobalt in cemented carbides has gained in attention recently because threats of regulations due to health issues (cancerogenic effect), increased demand from the electric vehicle industry and the questionable extraction from countries like Democratic Republic of Congo. In this report the use of Ni-based binder as an alternative binder for cemented carbides has been explored. READ MORE

  3. 22. Effect of carbon activity on microstructure evolution in WC-Ni cemented carbides

    University essay from KTH/Materialvetenskap

    Author : Olivia Danielsson; [2018]
    Keywords : Cemented carbides; Hard metal; WC-Ni; Tungsten carbide; Nickel binder; Grain coarsening; Grain growth; Carbon activity; Size distribution; EBSD; Electron backscattered diffraction;

    Abstract : The aim of this work was to systematically study how the microstructure evolution is affected by the carbon activity in WC-Ni cemented carbides. Seven WC-9.59at%Ni alloys with different carbon activity were sintered at 1500 °C. READ MORE

  4. 23. Wear and degradation of Co, Fe and Ni-based cemented carbides against sandstone and granite

    University essay from Uppsala universitet/Tillämpad materialvetenskap

    Author : Felix Jacobson; [2018]
    Keywords : Cemented carbide; mining; drilling; granite; sandstone; mine water; wear; degradation; tribology; tribochemical; cobalt; nickel; iron;

    Abstract : This diploma work is performed at Sandvik Mining and Rock Technology, Rock Tools division, a world-leading mining equipment manufacturer. The aim is to study the wear of cemented carbide rock drill inserts worn against granite and sandstone countersurfaces, with focus on the impact of binder phase composition and flushing agent chemistry. READ MORE

  5. 24. Performance and Wear Behavior of Ultra-Hard Cutting Tools during Machining of Titanium Alloy

    University essay from Lunds universitet/Industriell Produktion

    Author : Rebecka Lindvall; [2018]
    Keywords : Metal cutting; Machining performance; Titanium machining; Ti6Al4V; α β -alloy; Tool wear; Wear mechanisms; Cost efficiency; Colding analysis; Cemented carbide; PCD; pcBN; TEM; Technology and Engineering;

    Abstract : Since the 1950’s, a wide range of titanium alloys has been developed. Attractive titanium properties are the high strength-to-weight ratio, resistance towards corrosion, low thermal conductivity and low thermal expansion. READ MORE

  6. 25. Ageing tests of cemented carbide powders : An investigation for increased quality of metal cutting inserts

    University essay from Uppsala universitet/Tillämpad materialvetenskap

    Author : Eric Rösth; [2018]
    Keywords : cemented carbide; ageing; PEG; water absorption; sintering; DEK; DMK; coercivity; saturation magnetization; Hårdmetall; åldring;

    Abstract : In this study, the ageing effects on powder used for cemented carbide insert production are examined. Ageing is throughout this study, defined as the time dependent change of the magnetic properties: coercive field strength and saturation magnetization. READ MORE